baber/WOPTO huggingface dataset:
Patent GB-459541-A (GB)
Title: Improvements relating to the manufacture of insecticidal products from pyrethrum flowers
IPC: A01N65/12
Filed: 1935-07-10
Abstract: The active insecticidal constituents of pyrethrum flowers are obtained by distillation under very high vacuum of about 10<--2> to 10<--6> mm. of mercury and with the distilling and condensing surfaces only about 1 to 5 cm. apart.  The dried powdered flowers may be treated directly or may be fed to the still in suspension, or as an extract in a liquid which may be non-volatile, or partly or wholly volatile under the conditions of distillation.  When a volatile liquid is used a solution of the active material is obtained directly by the distillation.  The liquid may be a linseed oil stand oil, or a mineral oil fraction. According to an example, dried flowers are fed to the apparatus described in Specification 458,119, having the evaporating and condensing surfaces in the form of moving bands, and heated to 180 DEG  C. at 10<--4> mm. of mercury, the viscous liquid distillate being scraped from the condensing band.  According to a second example, the flowers are extracted at 100 DEG  C. with a non-volatile mineral oil known under the Registered Trade Mark "Apiezon J," and the filtered extract is distilled at 170 DEG  C. in a high vacuum still of the vertical concentric tube type, such as that described in Specification 437,895.  The condenser is maintained at 60 DEG  C. so as to obtain a free-flowing distillate.ALSO:The active insecticidal constituents of pyrethrum flowers are obtained by distillation under very high vacuum of about 10-2 to 10-6 mm. of mercury and with the distilling and condensing surfaces only about 1 to 5 cm. apart.  The dried powdered flowers may be treated directly or may be fed to the still in suspension, or as an extract, in a liquid which may be non-volatile, or partly or wholly volatile under the conditions of distillation.  When a volatile liquid is used, a solution of the active material is obtained directly by the distillation and may be further diluted for use.  The liquid may be a linseed oil stand oil, or a mineral oil fraction.  According to an example, dried flowers are fed to the apparatus described in Specification 458,119, [Group III], having the evaporating and condensing surfaces in the form of moving bands, and heated to 180 DEG  C. at 10-4 mm. of mercury, the viscous liquid distillate being scraped from the condensing band.  According to a second example, the flowers are extracted at 100 DEG  C. with a non-volatile mineral oil known under the Registered Trade Mark "Apiezon J," and the filtered extract is distilled at 170 DEG  C. in a high vacuum still of the vertical concentric tube type, such as that described in Specification 437,895.  The condenser is maintained at 60 DEG  C. so as to obtain a free-flowing distillate.
Patent GB-918508-A (GB)
Title: Production of benzoates
Inventor: SPIVEY ARTHUR MARSHALL
Filed: 1960-06-07
Abstract: Ortho-(b -hydroxyethoxy)-benzoic acid esters which may be substituted in the benzene ring by an inert atom or group or meta- or para-(b -hydroxyethoxy)-benzoic acid esters substituted in the benzene ring by an inert atom or group other than an alkyl group, are prepared by treating the appropriate hydroxybenzoic acid ester with ethylene oxide.  Inert atoms or groups include halogen atoms and hydrocarbon, acyl, alkoxy, alkoxycarbonyl, aryloxy, cyano and nitro groups and ortho hydroxy groups in compounds containing a meta or para hydroxy group.  The reaction is preferably carried out using an alkyl ester in the corresponding alkanol as solvent in the presence of sodium or potassium hydroxide or alkoxide.  Examples describe the preparation of ethyl o-(b -hydroxyethoxy)-benzoate, ethyl 2-hydroxy-p-(b -hydroxyethoxy)benzoate, ethyl p-(b -hydroxyethoxy)-3-methoxy-benzoate and ethyl 3 - chloro-p-(b -hydroxyethoxy)benzoate.  The o-hydroxy-(m or p)-(b -hydroxyethoxy) benzoic alkyl esters are claimed as new compounds.
Patent GB-295377-A (GB)
Title: Improvements in dog-racing apparatus
IPC: A63K1/02
Filed: 1928-07-09
Abstract: 295,377. Annesley, D. J., and Foots, M. Aug. 12, 1927, [Convention date]. Single-rail and central driving-wheel locomotives and tramway engines. - A machine for carrying a dogracing lure is propelled in a conduit by an electric motor and an air screw, an arm from the machine extending through a slot in the conduit roof and carrying the lure at its upper end. The machine is in two sections 10 and 11 bolted together at 12 and containing an electric motor which drives the air screw 32 and picks up its current from conductors 27 through rollers 26 and arms 22 which are held raised by springs 29. The machine has four stream-line sectioned arms 14, 15, 14<a>, 15<a> joined by links 17 and carrying wheels 19 running on rails 6, 7. The lure arm 33 is attached to the side at 13 and extends through a roof slot 4. Brake-blocks 42 are attached to bell-cranks 39, 40 connected to a rod 38. When the solenoid 35 is energized, as it normally is, it maintains the rod 38 raised against the action of a spring 37. This solenoid is in circuit with the motor and as soon as current is cut off the spring 37 applies the brakes. The Specification as open to inspection under Sect. 91 (3) (a) states also that the device may be used for carrying goods from one point to another. This subject-matter does not appear in the Specification as accepted.
Patent GB-625374-A (GB)
Title: Improvements in or relating to methods of applying a coating to a substratum having an irregular surface
IPC: H01J29/28
Filed: 1947-07-24
Abstract: A substratum having an irregular surface is coated by a method according to which a supply of material suitable for the purpose is blown out to form a thin bubble which is pressed against and attached to the substratum.  Examples of suitable materials are glass, nitrocellulose and acetyl cellulose, while a plasticiser such as castor oil may also be present.  The bubble may be formed from a material rendered viscous by heat treatment or by blowing a viscous solution of the material, specified solvents being ethyl and butyl acetates.  The bubble may be adhered to the substratum by means of a binder previously applied, or by means of Van der Vaals forces only, e.g. by heating the substratum while pressure is being applied to the bubble.  A subsequent layer may be applied to the coating and afterwards the bubble coating removed, e.g. by heating.  A plurality of bubble layers may be applied.
Patent GB-204810-A (GB)
Title: Improvements relating to ventilating systems for dynamo electric machinery
IPC: H02K9/24
Filed: 1922-07-21
Abstract: 204,810. Kuyser, J. A., and Metropolitan-Vickers Electrical Co., Ltd. July 21, 1922. Transformers.-The ventilating or cooling system of a dynamo or other electrical apparatus is combined with a protective device which operates a signal or alarm in the event of the electrical apparatus being put into operation while the cooling system is inactive or when the system does not pass sufficient of the cooling or ventilating medium during normal operation of the apparatus. The actuation of the signal or alarm is dependent jointly on the operation of the electrical apparatus and upon the flow of cooling or ventilating medium being below a predetermined minimum. In the form shown, comprised air is supplied for cooling a dynamo of which 5 is the exciter, 17 being a horn electrically sounded from mains 11 when a relay 8 is energized by a contact in the pressure gauge 7 whenever the pressure falls below a certain value. The contact in the gauge is connected to the mains 11 either directly or through a potentiometer 12, and the circuit is completed through the relay coil 8, a further relay 9 and a two-way switch 10. The coil 9 is in parallel with or otherwise connected to the exciter so as to be energized when this machine is operative. The switch 10 in its normal position completes the relay circuit and in the other position it connects a lamp 13 or other signal across the mains to show that the relay circuit is open. When the main machine (not shown) and exciter 5 are at rest, as the coil 9 is not energized the signal 17 is inoperative although the gauge contact at 7 is closed. If now the cooling system be started, the pressure in the reservoir 4 increases and the gauge contact will open so that the coil 8 will be de-energized and the signal 17 will remain inoperative. If, however, the exciter be started before the blower, both coils 8, 9 will be energized and the signal will be operated through the contact at 7. If during normal working the pressure falls, closure of the gauge contact operates the signal similarly. If it be desired to warm up the machine by running it under excitation without the cooling system, the switch 10 is thrown to the right thus opening the circuit of the main signal 17 and operating the signal 13 as a warning that the main circuit is open. In the case of an alternator the relay 9 may be volt-operated when the volts exceed the normal value by a predetermined amount, or it may operate when the ratio of the volts to the frequency exceeds a certain value. In a system in which the air passes through an independent blower after passing through the machine to be cooled, the gauge 7 is arranged to close its contact when the pressure is above the normal value instead of below it.
Patent GB-856581-A (GB)
Title: Preparation of block copolymers
IPC: C08F297/02
Filed: 1957-06-26
Abstract: A process for preparing block copolymers by anionic polymerization of a plurality of polymerizable vinylidene monomers comprises (1) polymerizing a first monovinylidene monomer under the influence of an anionic initiator in the sustantial absence of water and other chain terminating agent, the monomer having a lower e value (a parameter which depends on the degree of polarity of the monomer double bond) than the second monomer to be added.  (2) adding to the linear polymer thus formed a second monovinylidene monomer having an arithmetically positive e value greater than that of the first monomer, (3) continuing the polymerization of the second monomer in the presence of the linear polymer and, if desired, after polymerization of the second monomer, continuing polymerization in successive steps with further monomers, each successive monomer having an e value greater than the last and greater than that of the second monomer. Monomers specified are esters of acrylic, methacrylic and cyanoacrylic acid (listed), itaconic esters, acrylonitrile, methacrylonitrile, phenylacrylonitrile, vinylidene cyanide, styrene and its ring and alpha-substitution products (listed), alkyl vinyl and isopropenyl ketones, dimethyl and diethyl methylenemalonates, vinyl pyridines, N-vinyl and 1-vinyl pyrrolidones, butadiene, isoprene, piperylene, chlorobutadiene, nitroethylene and nitropropene.  Anionic initiators specified are alkali metals and their salts with weak acids, e.g. methanol, ethanol, indene, xanthene, butane, benzene, stilbene, tolan, phenylfluorene, fluorene, phenylxanthene, di-and tri-phenyl methane, diphenyl-a -naphthylmethane, cumene, naphthalene, ketones and ammonia, and also Grignard reagents.  The polymerization is preferably carried out in an inert solvent, e.g. an aromatic hydrocarbon or an ether.  The examples describe the preparation of the following block copolymers: (1) poly-a methylstyrene-polymethacrylate; (2) polymethyl methacrylate-poly-2-ethylhexyl acrylate; (3) polystyrene-polymethyl methacrylate; (4) polybutyl methacrylate-polyacrylonitrile; (5) polymethyl methacrylate-polybutyl acrylate; (6) polya -methylstyrene-polyethyl acrylate; (7) poly-co (octyl and decyl methacrylate)-polymethacrylonitrile; and (8) polyethyl acrylate-polyacrylonitrile.
Patent GB-1095984-A (GB)
Title: A process of extracting the coal mine gases co-existent with coal beds and rock deposits in a coal mine
IPC: G01N1/22
Filed: 1965-05-13
Abstract: 1,095,984. Minimising explosion risk in mines. TOA GOSEI KAGAKU KOGYO KABUSHIKI KAISHA. May 13; 1965 [May 18, 1964], No. 20148/65. Heading A5A. Explosive coal mine gases are extracted from unworked coal seams B' by inserting a casing pipe F into each vent hole E bored from a driftway A to seam B', filling at least a part of the annular space between F and E with an aqueous kneaded mixture of cement and one or more polymerisable polyvalent metal acrylates and/or methacrylates, with or without a polymerisation catalyst, the said mixture setting to form an annular seal G, and then extracting the gases through the pipe F and releasing them to the atmosphere or to storage means.
Patent GB-617523-A (GB)
Title: Production of secondary ultramarine from primary ultramarine
IPC: C09C1/32
Filed: 1946-07-05
Abstract: Primary ultramarine is oxidized to secondary ultramarine by carrying out at least the major and later portion of the oxidation by means of sulphur dioxide, in the absence of substantial quantities of oxygen, water vapour and strongly acid gases.  The sulphur dioxide is preferably mixed with an inert gas such as nitrogen to act as a carrier for the sulphur vapour formed during the operation and which may finally be recovered by cooling and condensation.  The process is applicable to a single-step operation starting from the firing of the raw materials, but preferably is used in a two-step operation with intermediate cooling of the primary ultramarine and ready contact between it and the sulphur dioxide in the second step.  In the examples, primary ultramarine is prepared as described in Specification 617,522, the briquets being cooled, broken up and loaded into a fused silica container.  This is heated to 400 DEG  C. while nitrogen is passed through to displace air after which the nitrogen is replaced by sulphur dioxide, the temperature rising to as high as 466 DEG  C.  After cooling, the charge is washed, wet-ground and dried.  Before oxidation, the primary ultramarine may be leached with water to remove soluble polysulphides.
Patent GB-1276471-A (GB)
Title: Door operating device
Inventor: BODE ENGELHARD
IPC: E05F15/56
Filed: 1971-04-19
Abstract: 1276471 Door operating devices E BODE 19 April 1971 [30 Jan 1970] 20218/71 Heading E2M A door operating device comprises a piston 6 and cylinder 7, pnuematically operated, or connected by a pivot 5 to a link 4 having an end member 3 telescopically arranged in it and pivoted to a door 1, this door being slideable along a rail 9. The rail 9 may be curved to swing the door outwardly as it opens.
Patent GB-838119-A (GB)
Title: Improvements relating to rope or belt slip responsive devices
Inventor: RUSSELL DEREK BARRY
IPC: B66D3/00
Filed: 1957-06-27
Abstract: 838,119. Belt gearing. ENGLISH ELECTRIC CO. Ltd. June 20, 1958 [June 27, 1957], No. 20266/57. Class 80 (1). [Also in Group XXX] A device for indicating the slip between a pulley, drum or the like and a rope or belt passing around it, particularly applicable to a mine hoist, comprises a roller 14 rotatably mounted on a bracket 13 on the pulley periphery and engaging the side of the rope or belt 10. This roller is geared to a contact arm 19 which co-operates with a stationary contact ring 20. If there is no slip between the rope and pulley there is no movement of the contact arm 19 but on slip occurring the arm 19 is moved to engage the ring 20 and complete a circuit to operate a relay. The relay may operate an indicating device such as a lamp or buzzer or a stopping mechanism for a mine hoist. Two or more of these devices may be arranged around the drum or pulley and two fixed contacts rings may be provided to indicate the direction of slip.
Patent GB-202311-A (GB)
Title: Process of conversion of gaseous aliphatic ethylene hydrocarbons into liquid hydrocarbons
IPC: C07C2/00
Filed: 1923-08-09
Abstract: Gaseous ethylenic hydrocarbons are polymerized to liquid hydrocarbon mixtures of indeterminate boiling point by passing them into a suspension of anhydrous aluminium chloride in gasoline or petroleum ether.  The gases should be pure and dry; it is advantageous to work under pressure.  The first product is a viscous liquid compound of the aluminium chloride and hydrocarbon, and probably serves as the catalyst for the subsequent polymerization of more hydrocarbon to a more mobile product.  It is advantageous first to pass butylene through the catalyst suspension when ethylene or propylene is to be polymerized.  The reaction product is treated with water to decompose the aluminium-chloride compound, and rectified for recovery of the petroleum ether, portions of the reaction liquid may also be drawn off at intervals and so treated, more gases being passed through the remainder.  The products still contain double bonds and may be hydrogenized by the usual methods; they may also be cracked to obtain products of lower boiling point.  Examples are given of the polymerization of butylene at ordinary pressure, and of ethylene at a pressure of 3 Kg. per sq. cm.  Specification 165,452 is referred to.
Patent GB-151442-A (GB)
Title: Improvements in building blocks and the like
IPC: E04B1/41
Filed: 1919-08-18
Abstract: 151,442. Jefferies, A. F. Aug. 18, 1919. Double walls.-A double wall is built of blocks formed on the inner faces with two frogs b separated by a web e, the horizontal edges having divided channels or grooves c, and the ends continuous grooves. Cross ties f are placed at intervals. The blocks may be reinforced.
Patent GB-152307-A (GB)
Title: Improvements in pressed steel wheels
IPC: B60B3/08
Filed: 1920-07-10
Abstract: 152,307. Reliance Wheel Co., (Assignees of Culp, J. S.). Oct. 6, 1919, [Convention date]. Disk wheels; detaching from, and attaching to, permanent hubs. - Disk wheels comprise two disks 5, 6 provided respectively with conical seatings 12, 21 to engage a flange 24 on the hub 23 and a conical securing nut 28. The disks are spaced at their outer edges by a ring <2> with depending lugs and are connected thereto by bolts 7. The bolts are retained in connexion with the inner disk and ring by a wire 9 engaging slots in two adjacent bolts. The disks are shaped as shown in the drawings with the steps 10, 18, 11, 19, the central part of the inner disk being coned at 15 and formed with a toothed edge 17, the outer disk being dished outwardly as at 20, and then turned inwardly at 21 and formed with a ring of teeth 22. The teeth 17, 22 are adapted to be engaged by a locking-pawl 32 carried by the nut. The pawl is kept in, engagement with the teeth by a spring ring 35 lying behind the shoulder 37 on the key, and is depressed to release the nut when the spanner is passed over the bevelled edge 33. The drive is transmitted by studs 14 riveted to the inner disk and entering holes 26 in the hub flange.
Patent GB-533774-A (GB)
Title: Improvements in or relating to apparatus for heat treating metal bodies
IPC: C21D1/08
Filed: 1939-07-13
Abstract: 533,774. Burners. SHORTER PROCESS CO., Ltd. (Linde Air Products Co.). July 13, 1939, No. 20416. [Class 75 (i)] [Also in Group II] In apparatus for heat treating metal bodies which comprise a heating unit for applying high temperature flames to heat locally the surface portion of such bodies, the heating flames being produced by the combustion of a mixture of oxygen and fuel gas, a cooling device for quenching heated surfaces, a timing mechanism for controlling the heating and cooling devices so that heating is discontinued after a predetermined time and the cooling medium applied simultaneously, is constructed so that when the heating is discontinued the flow of oxygen to the heating unit is terminated prior to the termination of the flow of fuel gas. The frame F which carries the heating head H, the retractable air quenching head Q and the air quenching device S includes two ports 20 clamped to a cabinet C containing a valve which is arranged to turn on the supply of acetylene before the oxygen. A pilot jet P is provided. The heating head H comprises upper and lower blocks 134, 135, connected by a shell 136, the rear surface of the block 135 being formed as a series of steps each carrying a lateral row of heating tips T. The block 135 is also provided with side portions 143 also provided with heating tips T. The tips T on the steps are supplied with the combustible mixture from one of the six headers such as 145 whose ends are closed by plugs 144<SP>1</SP>, 145<SP>1</SP> and 146<SP>1</SP>, each tip being connected to the header by a passage 147, the side tips T being supplied from a header the end of which is closed by a block 148'. The combustible mixture is fed by an inlet 77 to passage 151 connected to headers 152 from which lead tubes 154, 155, 156, 158, leading to the tips T. Cooling medium is supplied from inlets 174 by pipes 175 to headers in the block 135.
Patent GB-1105921-A (GB)
Title: Film strip handling apparatus
IPC: G03B1/42
Filed: 1965-05-14
Abstract: 1,105,921. Threading record strips. EASTMAN KODAK CO. 14 May, 1965 [14 May, 1964], No. 20417/65. Heading G5R. [Also in Division G2] A clamping arrangement for preventing premature re-winding of a film strip on a supply reel constantly tensioned by a slipping clutch drive, as for example, during threading, comprises a lead-in roller 14 on arm 23 against which a friction pad 15 is biased to grip the film sufficiently to prevent re-wind on to supply reel 10. When the film 12 is engaged by claw feed 35, the tension increases and dancing roller 31 is depressed on its plastics spring arm 33. Arm 36 is pivoted anti-clockwise and tail 37 turns trigger 18 about pivot 19 to disengage slot 21 in the arm 23 which is then lifted by spring 26 to release the film from pad 15. The pad may be of cork or rubber.
Patent GB-573131-A (GB)
Title: Improvements in or relating to piston rings
IPC: F16J9/20
Filed: 1943-12-07
Abstract: 573,131. Piston rings. ASPIN, F. M. Dec. 7, 1943, No. 20454. [Class 122 (i)] [Also in Group XXII] A piston ring is formed by bending to circular form a flat strip a of steel &c. having a bearing strip b of lead bronze &c. bonded thereto as by casting. The sides of the ring may have applied wearing surfaces c.
Patent GB-957020-A (GB)
Title: Method for the production of an insulin preparation for peroral use
IPC: C07K14/625
Filed: 1960-06-10
Abstract: An insulin-containing substance suitable for oral administration is prepared by mixing insulin having an apparent average molecular weight of up to 12,000 with a trypsin inhibitor of animal or vegetable origin in an acid liquid medium having a pH of 2 to 5 whereby an insulin-trypsin inhibitor complex is formed which is not destroyed when the pH is subsequently raised.  The known insulins may be used in the preparation of the complex including those containing up to 8% zinc or one or more of the metals Ca, Mg, Mn, Fe, Co, Ni, Cu or Cd and the product may be used as it is formed in solution or suspension or it may be dried, e.g. by lyophilisation and put up into conventional orally administrable forms, e.g. hard gelatine capsules or enteric coated pills which may also comprise known antioxidants and substances which raise the adsorbability of medicines in the intestinal tract, e.g. B-group vitamins, Vitamin C and hyaluronidase.